Regions Of Earth Research Articles

Полемичность политического дискурса в региональном интернет-пространстве

The mass media system of the 21st century is significantly different from that of the turn of the century. Mass media have undergone significant changes, which is largely due to the increased technical capabilities of both senders of media content and its recipients. Significant volumes of operational information in such conditions are transmitted through Internet media, which, under conditions of convergence, combine the capabilities of print media, TV and radio channels. A significant layer of relevant information on various topics is transmitted through social networks. We consider the relevance of political discourse in the Internet space of the region. The choice of the issues of the materials analyzed in the work is dictated by the invariable relevance of political discourse in modern mass media. The purpose of the study is to comprehensively explore the assumption that political content has significant potential to encourage mass audiences to engage in dialogue; at the same time, polemic is often organized around such materials between various users of social networks. We study the algorithm for conducting controversy in social networks, identify its relevance among the audience of users in the region. The empirical base of the study is made up of publics in social networks that are popular with residents of the Tambov Region. In addition, attention is drawn to the accounts of the heads of other regions of the Central Black Earth region – Belgorod, Voronezh, Kursk regions. When selecting materials for analysis, a continuous sampling method is used, while the popularity of Internet publics and the presence of a significant number of reactions to materials expressed by means available to users (verbal and non-verbal) became the key criterion for selecting texts. As a result of the study, we reveal a high degree of popularity of political discourse in social networks among the regional audience, its ac-tivity in the discussion of media materials. We find that a significant part of such publications is accompanied by controversy in social networks, in the development of which both the authors of the publications and (to a greater extent) the mass audience of readers participate. We conclude that publics in social networks can contribute to the growth of ratings of political leaders, streng-thening their positions and, as a result, increasing the trust of the audience of the electorate.

Peculiarities of value-rational grounds of dispositions of actors of physical-educational space of a regional university in the new reality

The paper considers the problem of modern specificity of value-rational grounds of dispositions of actors of physical-educational space of regional universities. The empirical basis of the work results from sociological research conducted in 2019-2020 by questionnaire survey of the subjects of physical-educational space of universities in the Belgorod, Kursk, and Lipetsk regions (the Central Black Earth regions of Russia, which have close characteristics). It is argued that despite the importance of the value of physical development, the representatives of different groups of actors of physical-educational space of regional universities are included in this activity to a different extent. The main reasons for the differences are connected with the peculiarities of comprehending the value of physical development and determining the model of behavior within the physical-educational space on this basis. Two models of attitude towards this value are distinguished: the model of rational efficiency, which is used by the most of the administrators, professors and researchers; and the combined model, which composes the rationality of survival and imaginative rationality, which is most typical of students.

Approaches to the plane landscapes altitudinal organization study

Terrain elevation variations (absolute and relative) play a special role in the organization of plain landscapes. They are most clearly observed in the form of zonal landscape vertical differentiation. Vertical relief transformation leads to formation of altitudinal landscape systems, which are dynamically and morphologically united groups of landscapes. They have a common altitudinal position and genesis under the influence of horizontal and vertical physiographic process. We have analyzed the influence of relative and absolute altitudes on morphometric parameters of the land surface as well as indicators of landscape-forming processes and textural terrain indicators, and so identified altitudinal landscape systems of different dimensions. A well-studied region in terms of landscape science, the Central Black Earth region, was the case study area. As a result of the study, we revealed spatial patterns in (i) the indicators of horizontal and vertical terrain ruggedness in relation to the absolute terrain altitudes at the level of landscape, and (ii) the morphometric indicators of terrain, landscape-forming processes and landscape shapes at the local level.

Помещичьи библиотеки в провинциальной культуре Центрального Черноземья (обзор исследовательских трактовок и концепций)

The organization and existence of manor libraries in pre-revolutionary Russia as a condition for the transmission and dissemination of the culture of reading among the nobility remains an important issue of study and thus remains relevant at the present time. The pre-revolutionary historiography of the book collecting of estate owners, dedicated to estate libraries, both at the all-Russian and at the regional level, is considered. The features of the formation and development of book collections are characterized, the problems of studying the circle of reading of the nobles are indicated. The aspects of the influence of the socio-political situation on the study of book collections, which were most affected in the 20–60s of 20th century are indicated. The modern stage of development of the historiography of the noble manor libraries of the Central Black Earth Region, including the distribution of foreign book collections in them, is analyzed. The applied analytical and interpretive method made it possible to “inscribe” the personal libraries (or their fragments) of the region into the general panorama of scientific ideas about the phenomenon of a personal library. The structural-component method made it possible to present the owners’ meetings as a complex communication system, the basis of which was the “book-reader” relationship. An analysis of the historiography of the problem shows a variety of research approaches to the characteristics of private collections, a wide variety of author’s interpretations of the history of the formation of individual libraries of the nobility.

Высотная организация равнинных ландшафтов (на примере Центрального Черноземья России)

Absolute and relative terrain altitudes are an important factor in the genesis of geosystems. They determine differences in morphometry indicators, intensity and direction of landscape-forming processes, and landscape patterns. The study objective is to identify the relationships between altitudes and landscape metrics at four scale levels. The forest-steppe zone of the Central Black Earth Region of Russia was chosen as a study area. Authors of the article created a digital elevation model and a landscape map for the area, then conducted morphometric, hydrological, insolation, and textural analyses. Applying grids with different cell-sizes, the analyses results were obtained and stored into a spatial database. Authors divided the obtained indicators into three groups: condition, process, result. The regression analysis showed that the dependence of the relief dissection parameters on the absolute altitudes decreases with the increase of the study scale. The dependence of the indicators of landscape-forming processes and landscape textures on the relative heights increase when the study scale decreases. Ranking of the greed cells by indicators of absolute and relative heights made it possible to identify morphologically and dynamically unified altitudinal landscape systems. As one of the research results, the authors of the article devised a taxonomic scheme of altitudinal landscape systems, which included the division, class, subclass, type, subtype, family, genus, species, and subspecies categories.

Dike Propagation During Global Contraction: Making Sense of Conflicting Stress Histories on Mercury

Thrust fault-related landforms, smooth plains units, and impact craters and basins have all been observed on the surface of Mercury. While tectonic landforms point to a long-lived history of global cooling and contraction, smooth plains units have been inferred to represent more punctuated periods of effusive volcanism. The timings of these processes are inferred through impact cratering records to have overlapped, yet the stress regimes implied by the processes are contradictory. Effusive volcanism on Mercury is believed to have produced flood basalts through dikes, the propagation of which is dependent on being able to open and fill vertical tensile cracks when horizontal stresses are small. On the contrary, thrust faults propagate when at least one horizontal stress is very large relative to the vertical compressive stress. We made sense of conflicting stress regimes through modeling with frictional faulting theory and Earth analogue work. Frictional faulting theory equations predict that the minimum and maximum principal stresses have a predictable relationship when thrust faulting is observed. The Griffith Criterion and Kirsch equations similarly predict a relationship between these stresses when tensile fractures are observed. Together, both sets of equations limit the range of stresses possible when dikes and thrusts are observed and permitted us to calculate deviatoric stresses for regions of Earth and Mercury. Deviatoric stress was applied to test a physical model for dike propagation distance in the horizontally compressive stress regime of the Columbia River Flood Basalt Province, an Earth analogue for Borealis Planitia, the northern smooth plains, of Mercury. By confirming that dike propagation distances from sources observed in the province can be generated with the physical model, we confidently apply the model to confirm that dikes on Mercury can propagate in a horizontally compressive stress regime and calculate the depth to the source for the plains materials. Results imply that dikes could travel from ∼89 km depth to bring material from deep within the lithosphere to the surface, and that Mercury’s lithosphere is mechanically layered, with only the uppermost layer being weak.

ADAPTABILITY OF DOMESTIC POTATO VARIETIES IN THE CONDITIONS OF THE NON-BLACK EARTH REGION OF RUSSIA

The article presents the study results on a comprehensive assessment of varieties from the Velikiye Luki State Agricultural Academy collection in the conditions of the Nonblack Earth Region of Russia. The data were obtained for the Pskov and Tver regions. The varieties of the collection belong to different ripeness groups and were obtained by different selective breeding organizations. The adaptive potential of potato varieties of
 different ripeness groups under annually changing weather conditions has been estimated. In the course of research, varieties with high plasticity and productivity were identified. All varieties are characterized by high yield and resistance to diseases.

Хозяйственно-биологическая характеристика биотипного состава сортов яровой пшеницы

The aim of this work is to study the component composition and intravarietal polymorphism of storage proteins of three soft and one hard varieties of spring wheat and their relationship with a complex of economically valuable traits. The studies were carried out in 2018–2020 by the department of genetics and immunity at the institute, in the conditions of the southeast of the Central Black Earth Region. In the course of the work, the identification of gliadin biotypes was carried out by electrophoresis in 6.5% polyacrylamide gel, the results of which revealed that the genome of the studied varieties contains: Chernozemnouralskaya 2 (5 biotypes), Voronezh 18 (5 biotypes), Voronezh 20 (4 biotypes) and a solid variety Voronezhskaya 13 (1 biotype). The selected biotypes were propagated for 3 years, analyzed and evaluated according to the indicators of the structural analysis of the elements of productivity and quality. Based on this, their economic and biological characteristics were given. It was found that biotypes 3 and 4 of the Chernozemnouralskaya variety 2, biotypes 1 and 2 of the Voronezhskaya 18 variety, biotypes 1 and 2 of the Voronezhskaya 20 variety proved to be the most productive relative to the standard during the study period. As for the quality indicators, as a result of the research the difference in quality of gliadin biotypes was revealed, which is important to take into account in breeding work to increase genetic diversity when creating high-quality varieties. The ones with the best quality were: biotype 1 of the Chernozemnouralskaya variety 2, biotypes 2 and 3 of the Voronezhskaya 18 variety. The best biotypes, distinguished by a complex of economically valuable traits, which differ from the initial variety, can be used in further breeding work for the accelerated creation of highly productive and high-quality spring wheat varieties.

Studying agronomic characters in new millet accessions from the VIR collection at Yekaterinino Experiment Station of VIR

Background. Adding new plant varieties to the VIR collection is an important effort to preserve the diversity of worldwide bioresources. The millet collection at VIR is formed through the study of acquired accessions, aimed at identification of biological features that have emerged under certain conditions. Such germplasm may be recommended for use in breeding practice. Studying new accessions makes it possible to predict long-term development of the collection.Materials and methods. The study was carried out at Yekaterinino Experiment Station of VIR, Tambov Province, in 2017–2019. New millet accessions added to the VIR collection served as the research material. The study was based on the descriptors and guidelines for Panicum miliaceum L. developed at VIR.Results and conclusions. An assessment was made for such agronomic characters as the growing season, plant height, grain size, grain yield, and resistance to bacteria. The identified accessions exceeded the reference (cv. ‘Gorlinka’) in a number of traits. Earliness was observed in k-10479 (‘Dozh’), k-10481 (‘Zapadnoye’), k-10324, k-10325, k-10478 (‘Nizhnevolzhskoye’), k-10275 (‘Kvartet’), k-10306 (‘Volga 59’), k-10322 (‘Soyuz’), k-10473 (‘Yarkoye 120’), and k-10474 (‘Kavkazskiye zori’). Low plant height was recorded for k-888, k-10324, k-10306, k-10474, k-10479, k-10326, k-10481, and k-10480 (‘Kamyshenskoye’). Large grain size was shown by k-888, k-10325, k-10306, k-10324, k-10479, k-10475 (local), k-10322, k-10473, k-10480, and k-10481. High grain yields under the conditions of the Central Black Earth Region of Russia were demonstrated by the accessions from Belarus (cv. ‘Zapadnoye’, k-10481) and from Chelyabinsk Province (local cultivar, k-888). Medium and strong resistance to bacterial pathogens was observed in k-888, k-10275, k-10473, k-10474, k-10324, and k-10325. The selected accessions can serve as source material for the development of new millet cultivars.

Landscape-ecological land management of the Central Black Earth Region and its implementation in modern conditions

One of the main conditions for the successful development of adaptive farming is the landscape - ecological arrangement of arable territories of agricultural enterprises, which lays the foundation for the preservation and reproduction of soil fertility. The modern paradigm of agricultural nature management requires the improvement and development of new methods in the field of management of arable land on a landscape-ecological basis.

Abundance of low profitable agricultural lands in Non-Black Earth Region and possibilities for their use

The development of agriculture, the economic efficiency of agricultural activities and the level of rural life arrangement are the main factors for the formation of settlement in rural areas. The key to a systemic, comprehensive approach to providing sustainable rural development in regions remote from urban agglomerations and large cities is the sustainable development of the agricultural sector, ensuring the employment and high salary of rural residents. In the Russian agroclimatic conditions, agricultural production is only possible with non-normalized family labor, cheap hired labor and state support. The existence of a sociooriented, small-scale, mostly natural agricultural sector has a positive effect on employment and solving social problems in rural areas. The inflow of rural residents into the cities, where it is easier to find a job and better living conditions, and reduction the number of rural settlements are still strong. The main questions: how to improve life in small villages with few residents where the wearing of the preserved residential buildings exceeds 80-90% and what to do with such degraded settlements in rural areas, the maintenance of which local self-government can’t afford. To solve these issues in the process of development of rural areas, it is necessary to create land management and development schemes of the agro-industrial complex in the Non-Black Earth Region of the Russian Federation taking into account the subjects of the Russian Federation relating to territories with low and high population density, studying the structure of employment of the population, including employment in agriculture and other industries, and types of economic land use of these rural territories. The development of regional and municipal land management and development schemes of the agro-industrial complex will allow to identify forecast of the spatial development of agricultural land use, to determine the geographical boundaries and areas of arable lands, their expansion, compression or stabilization in bioclimatic limits to meet consumer demand in agricultural products, due to the level of development of the regional economy, interregional and export trade or import of agricultural production. Research and systematic analysis of the entire set of production-economic, socio-economic and natural-ecological factors in the development of the rural economy, its main sectors – agricultural and forestry, and the state of rural infrastructure – engineering (technical) and social (first-aid posts, schools, kindergartens) makes it possible to identify all interconnections between them and make reasonable management decisions.

The Structure of the Cusp Diamagnetic Cavity and Test Particle Energization in the GAMERA Global MHD Simulation

AbstractElectrons with energies ≥40 keV can be found at low density in many different regions of Earth's magnetosphere. A litany of fundamental questions in space physics have focused on the acceleration mechanism of these particles, given that the sources of plasma are the relatively cool ionosphere and solar wind (∼1–100s eV). Upgraded global solar wind‐magnetosphere simulations which can resolve mesoscale dynamics have the ability to enhance our understanding of these high energy particles. This is because the energization of particles often takes the form of a sequence of discrete steps, potentially occurring in different regions of the magnetosphere and due to both meso‐ and global‐scale processes. First, brief results are presented from the Grid Agnostic MHD for Extended Research Applications (GAMERA) global simulation on the structure of the cusp diamagnetic cavity for northward and southward IMF. Then, the Conservative Hamiltonian Integrator for Magnetospheric Particles (CHIMP) framework, with both guiding center and full Lorentz integrators, evolves necessary parameters such as the energy and pitch angle of electron test particles to investigate particle acceleration inside the cavity, as well as the ultimate fate of electrons accelerated inside the cavity. The simulation shows that particles can gain ≥ 10 keV inside the cavity and subsequently leak into the magnetosheath or onto dipolar field lines where they execute different types of bounce motion. The distribution of test particles initialized inside the cavity is compared with Magnetospheric Multi‐Scale (MMS) observations.

Razdolye – a new mid-late variety of soft winter wheat

Wheat bread rightfully belongs to the greatest inventions of mankind. The aim of the research is to characterize the new Razdolye soft winter wheat variety for compliance with these requirements. The research was carried out in 2016-2020. The research object was the Razdolye winter wheat variety. The Ermak variety was used as a standard. The accounting area of the plot is 10 m2. The Razdolye variety was submitted to the State Variety Testing of the ARC “Donskoy” jointly with the Federal State Budgetary Organisation “Research Institute of Agriculture of Crimea”. Razdolye has a high grain yield. The average yield of Razdolye in competitive trials for the predecessor green manure fallow over five years of study (2016-2020) was 10.57 t/ha, which is 1.68 t/ha higher than the standard variety Ermak. By ripening, it belongs to the middle late ripeness group, hatches and ripens 4 days later than the standard variety. Possesses high drought resistance, heat resistance, frost resistance and resistance to the main diseases of the region. Razdolye is being studied since the fall of 2020 in the North Caucasus, Lower Volga and Central Black Earth regions of the Russian Federation.

Genetic diversity of the Central European wild boar (Sus scrofa scrofa) population and domestic pig (Sus scrofa domesticus) breeds based on a microsatellite DNA locus.

The results of studies of the genetic structure of the Central European wild boar (Sus scrofa scrofa) population and four breeds of domestic pigs (Duroc, Yorkshire, Large White and Landrace) bred in the Central Black Earth region of Russia are presented in this work. Based on 12 microsatellite loci, a significant ( p <0.05) decrease in the level of genetic variability in bred breeds was shown. The expected heterozygosity and Shannon index were as follows: in the wild boar, Ho = 0.763 ± 0.026, I = 1.717 ± 0.091; in the Duroc breed, Ho = 0.569 ± 0.068, I = 1.191 ± 0.157; in the Landrace, Ho = 0.618 ± 0.062, I = 1.201 ± 0.147; in the Large White, Ho = 0.680 ± 0.029, I = 1.362 ± 0.074; and in the Yorkshire, Ho = 0.642 ± 0.065, I = 1.287 ± 0.156. The results of checking genotypic Hardy–Weinberg equilibrium based on the G-test of maximum likelihood demonstrated that the overwhelming majority of loci in the wild boar population were in the state of said equilibrium. By contrast, in pig breed populations, some loci demonstrated a significant deviation from the indicated equilibrium. In addition, the Yorkshire, Large White, and Landrace populations had loci, for which the hypothesis of neutrality was reliably rejected based on the results of the Ewens–Watterson test. The revealed private alleles, characteristic of the wild boar and breeds, can later be used to identify them. The ordination of the centroids of different herds in the space of the first two principal coordinates based on the matrix of pairwise estimates of Nei’s genetic distances showed that the most distant populations are the Duroc and Boar breeds, and the most genetically close are the Yorkshire and Landrace breeds. The closest to the wild boar population was the Large White breed. The assessment of the effective size, carried out using the method based on the linkage disequilibrium and the molecular coancestry method, showed that in all studied groups, including the wild boar population, the effective size was less than 100 individuals. The low effective size of the wild boar population (Ne = 21.8, Neb = 4.0) is probably caused by the death and shooting of animals due to Pestis africana suum.

Aftereffect of Fertilizers Applied in a Crop Rotation System with Sugar Beet on the Fertility of Leached Chernozem Soils and the Yield and Quality of Grain Crops in the Central Black Earth Region

Aftereffect of Fertilizers Applied in a Crop Rotation System with Sugar Beet on the Fertility of Leached Chernozem Soils and the Yield and Quality of Grain Crops in the Central Black Earth Region

Ecological Assessment of Sulfur Content in Agroecosystems of the Central Black Earth Region of Russia

Studies were carried out on the territory of the steppe and forest-steppe zones of the Central Black Earth Region of the Russian Federation. The objects of research were the soil of nature reserves and arable chernozems that were not touched by agricultural activity, typical and common, the vegetation cover of natural biocenoses and agroecosystems, and organic fertilizers. The studies found that the background content of mobile sulfur in virgin soils is at a low level: 2.31 mg/kg - in a typical chernozem and 1.83 mg/kg - in an ordinary chernozem. According to agrochemical monitoring of arable soils carried out during 2015-2018, an increase in the weighted average content of mobile sulfur by 0.7 mg/kg to 3.3 mg/kg was established, compared to 2005-2009. However, the proportion of soils low on this element remains quite high - 90.3%. The main source of sulfur supply to the soils of agroecosystems (7.52 kg/ha) are organic fertilizers, the doses of which in 2015-2018 increased to 8.1 tons/ha. The average sulfur content in the steppe mixture of herbs of reserves is 0.3-0.4 mg/kg. The highest sulfur content among perennial legumes is clover (0.61%) and alfalfa (0.60%), and among legumes - soybeans, containing 0.34% of the element in grain and 0.21% - in straw.

The reaction of soybean varieties to the use of a biological product

Relevance. In the conditions of the Central Black Earth region in the farm “Yaroslav the Wise” of the Starooskolsky district of the Belgorod region, five soybean varieties (Belgorodskaya 48, Bara, Victoria, Opus and Kassidi) were studied on nutritional backgrounds — without seed inoculation and without biological treatment (control), using only inoculation and with the use of a biological product against the background of seed inoculation.Methods. The experimental conditions differed in rainfall patterns and the amount of heat, their distribution was especially uneven in 2020, that had a significant negative effect on the yield of all studied soybean varieties. The soil of the experimental plot is typical medium-thick chernozem, medium-humus, heavy loamy texture. The advantages of the soybean variety Opus, the plants of which formed a large height, air-dry mass, leaf area, a greater number and mass of nitrogen-fixing nodules on the roots, were revealed. Plants of this variety provided a higher yield level in all studied agro-backgrounds.Results. The yield varied from 32,5 centners per hectare (control) to 36,2 centners per hectare (when using the biological product Biogor, Zh). The content and collection of protein were also higher in the Opus cultivar in all the studied agrophones. In comparison with the control, the protein content was higher by 4% (background — control), by 4,9% — with inoculation of seeds and by 6,1% — when using a biological product. The same pattern is observed when assessing the oil content in seeds and collecting protein and oil per hectare of soybean sowing. Inoculation of seeds with soybean inoculant Nitragin, KM improved plant development and increased productivity, as well as the profitability of cultivation of the studied soybean varieties, which was higher when using a biological product against the background of seed inoculation by an average of 27%, while with only inoculation — by only 15,1%.

Technology of effective microorganisms for the growth of agricultural plants of the Fabaceae family

This article presents the results of studies reflecting the influence of the technology of effective microorganisms (TEM) on the development of plants of the Fabaceae family (Pisum sativum L.). The assessment of the real effectiveness of EM agents in the mild climate of the Central Black Earth region and their influence on field germination and morphophysiological parameters of plants is given. The theoretical foundations of the use of EM agents, their role in the formation of soil microbiological communities and the assessment of their impact as a factor influencing the efficiency of legume-rhizobium symbiosis are presented. The exogenous treatment with biological products significantly increased the number and mass of active nodules on experimental plants, which contributed to the increase in nitrogen-fixing activity, which was an important component for legumes. The authors pay due attention to the assessment of the parameters of photosynthetic activity of plants under the conditions of increased inoculation with microorganisms. Not only an increase in leaf area was noted, but also a longer functioning of the photosynthetic apparatus, which led to an increase in the intensity of the work of the green surface of plants during the entire growing season. The combination of stimulating factors provided a better increase in dry biomass, which was reflected in a significant increase in the value of plant yield. The most intense accumulation of dry matter was observed in the flowering phase, which was also characterized by more intensive inoculation of plants. At the end of the growing season, this was reflected in an increase in the number of beans per plant and seeds in one bean, which had a positive effect on the crop yield indicators. The research results indicate the prospects of the use of the technology of effective microorganisms in plant growing and agriculture for the production of environmentally friendly food products and soil fertility recovery.

Different origin soft spring wheat varieties and lines comparative analysis

This work is devoted to the study of spring soft wheat samples collection material. Eighty collection specimens were evaluated, divided by their origin into four groups. The assessment was carried out according to the limiting characteristics for spring wheat: high productivity, stable over the years, resistance to biotic and abiotic environmental factors. A two-year field test made it possible to compare different groups in terms of yield, and to identify the most promising varieties and lines for the conditions of the Central Non-Black Earth Region. The evaluation of the collection samples of origin various groups showed that the varieties and lines of their own selection were the most adapted to the soil and climatic conditions of the Central Non-Chernozem region. The new lines of spring wheat, along with a high level of yield, showed resistance to biotic and abiotic stressors. Varieties of foreign selection are distinguished by a strong non-spreading stem, high density of the stem, as well as high resistance to the most harmful leaf diseases. Of particular interest are the varieties of the Belarusian selection Darya, Dalech, Viza, Rostan with a high yield potential at the level of 5.0-6.0 t/ha.

Comparative characteristics of yellow alfalfa accessions in the nursery of competitive variety testing

In the context of the progressive trend of aridization of the climate of the main agricultural regions in the forest-steppe and steppe zones, the problem of increasing and stabilizing the high productivity of forage crops is becoming more acute. Yellow alfalfa (Medicago falcata L.) is highly resistant to abiotic stresses such as drought and low temperatures. This crop is resistant to extremely stressful conditions for cultivation in arid conditions, high production potential for the production of various types of bulky forage. The limiting factor of the effective economic use of yellow alfalfa in the Central Black Earth region of Russia is the insufficient number of zoned varieties, only three. The zoned varieties of alfalfa that exist today do not fully meet the requirements of modern forage production, and the tasks of developing new varieties with increased productivity, competitive ability in grass mixtures and increased longevity are becoming urgent. A highly productive variety of yellow alfalfa Pavlovskaya 7 was previously created at the Voronezh Experimental Station for perennial grasses. The Pavlovskaya 7 variety is characterized by high resistance to fungal diseases and mycoplasmosis, drought resistance, and long (up to 12 years) productive longevity. Currently, the station is completing selection work to develop a new variety of yellow alfalfa with a complex of economically valuable traits and properties for conditions of insufficient moisture.